<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        #l1 {
            color: red;
        }
        .c1 {
            color: green;
        }
        input[type="text"],body>p {
            background-color: yellow;
        }
        body>div>div>p {
            color: pink;
        }
        body div div p {
            background-color: blue;
        }
        a:link {
            color: green;
        }
        a:visited {
            color: red;
        }
        a:hover {
            color: yellow;
        }
        a:active {
            color: purple;
        }
    </style>
</head>
<body>
    <ul>
        <li id="l1">刘备</li>
        <li>关羽</li>
        <li class="c1">张飞</li>
    </ul>
    <p>香蕉</p>
    <p class="c1">苹果</p>
    <input type="text">
    <input type="password">

    <div>
        <p>p1</p>
        <div><p>p2</p></div>
        <div>
            <div>
                <p>p3</p>
            </div>
        </div>
    </div>
    <a href="http://www.qq.com">腾讯</a>
</body>
</html>